Inner container structure of electric heating faucet and electric heating faucet

Abstract

The utility model relates to the technical field of electric heating faucets, and discloses an inner container structure of an electric heating faucet and the electric heating faucet. The inner container structure of the electric heating faucet comprises an inner container assembly, a heating piece and a flow guide piece, a main water inlet is formed in one end of the inner container assembly, and a main water outlet is formed in the other end; the inner container assembly comprises an inner container body, a heating cavity is formed in the inner container body, and the main water inlet and the main water outlet are both communicated with the heating cavity. The heating piece is arranged in the heating cavity, and a water outlet cavity is formed between the end, close to the main water outlet, of the heating piece and the main water outlet. The flow guide part is arranged in the heating cavity, one end of the flow guide part is communicated with the main water inlet, and the other end extends to the water outlet cavity and is provided with a water outlet hole; and the water outlet holes and the main water outlet are arranged at intervals. According to the electric heating faucet, cold water flowing into the water outlet cavity from the flow guide part can disperse high-temperature hot water in the water outlet cavity, the high-temperature hot water is rapidly cooled, the temperature of the part of water firstly discharged from the main water outlet is reduced, and the scalding risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric water faucets, in particular to an inner tank structure of an electric water faucet and the electric water faucet. Background Art

[0002] Electric water faucets can heat water quickly, providing convenience for users' lives.

[0003] Electric water faucets usually use heating tubes made of stainless steel or copper. The heating tubes still have residual heat after the heating stops, and the inner tank volume of the electric water faucet is small. The residual heat of the heating tubes will quickly heat the water in the inner tank to a higher temperature. If it is used again in a short period of time, this part of the higher temperature water will be discharged first. This phenomenon is called water stop temperature rise. When the normal water temperature is about 40℃, the high-temperature hot water generated by the water stop temperature rise will reach 50℃~60℃, which poses a risk of scalding. Utility Model Content

[0004] The first technical problem solved by the present invention is to provide an inner tank structure of an electric water faucet, which can effectively solve the problem that the existing inner tank structure is easy to be scalded when water is used again in a short period of time; and reduces the risk of scalding when water is used again in a short period of time.

[0005] The second technical problem solved by the present invention is to provide an electric water faucet, which can solve the problem of temperature rise when water is stopped in existing electric water faucets, reduce the risk of scalding when water is used again in a short period of time, and ensure the safety of the electric water faucet.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] The inner tank structure of the electric water faucet, wherein the inner tank structure comprises:

[0008] An inner liner assembly, wherein one end of the inner liner assembly is provided with a main water inlet and the other end is provided with a main water outlet; the inner liner assembly comprises an inner liner body, a heating chamber is provided in the inner liner body, and the main water inlet and the main water outlet are both connected to the heating chamber;

[0009] A heating element is disposed in the heating cavity, and a water outlet cavity is formed between an end of the heating element close to the main water outlet and the main water outlet;

[0010] A flow guide is provided in the heating chamber, one end of the flow guide is connected to the main water inlet, and the other end extends to the water outlet chamber and is provided with a water outlet hole; the water outlet hole is spaced apart from the main water outlet.

[0011] Compared with the background technology, the inner tank structure of the electric water faucet described in the present invention has the following beneficial effects:

[0012] The electric faucet provided by the present invention has an inner tank structure in which cold water enters the heating chamber through an independent water inlet. The heating element heats the cold water in the heating chamber to hot water at the user's desired temperature. When the heating element stops heating, the residual heat of the heating element produces hot water. When the faucet is restarted, the cold water enters the guide element through the independent water inlet and is guided by the guide element to flow into the water outlet chamber formed between the end of the heating element near the main water outlet and the main water outlet. Because the heating power of the heating element is unstable and the heating speed is slow when the heating element is just started, the outlet hole is spaced apart from the main water outlet. At this time, the cold water flowing into the water outlet chamber from the guide element can disperse the high-temperature hot water in the water outlet chamber, quickly cooling the high-temperature hot water to lower the temperature of the hot water in the water outlet chamber. This ensures that the cooled hot water is first discharged from the main water outlet, thereby reducing the risk of burns. It is understandable that due to the small size of the heating chamber, after the heating element has stabilized, the cold water entering the water outlet chamber through the guide element can also be quickly heated without affecting the normal water outlet temperature.

[0013] In one embodiment, a radial spacing is left between the water outlet hole and the main water outlet.

[0014] In one embodiment, the radial spacing is H, then 1 / 6D<H≤1 / 4D, where D is the inner diameter of the liner body.

[0015] In one embodiment, an axial spacing is left between the water outlet hole and the main water outlet.

[0016] In one embodiment, the axial spacing is h, then 10 mm ≤ h ≤ 20 mm.

[0017] In one embodiment, the flow guide is provided on the inner wall of the inner container body.

[0018] In one embodiment, the flow guide is integrally formed with the inner wall of the liner body.

[0019] In one embodiment, the inner tank assembly further includes a top cover, which is disposed at one end of the inner tank body close to the heating chamber, and the main water outlet is disposed on the top cover.

[0020] In one embodiment, a sealing member is provided between the top cover and the inner wall of the liner body.

[0021] The second technical problem mentioned above is solved by the following technical solution:

[0022] An electric water faucet comprises the inner tank structure of the electric water faucet as described in any of the above solutions.

[0023] Compared with the background technology, the electric water faucet of the present invention has the following beneficial effects:

[0024] The electric water faucet provided by the present invention uses the inner tank structure of the above-mentioned electric water faucet, which can quickly cool down the high-temperature hot water remaining in the heating chamber, reduce the risk of scalding caused by temperature rise during water outage, and ensure the water safety of the electric water faucet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the inner tank structure of the electric water faucet provided by the specific embodiment of the utility model;

[0027] Figure 2 This is an exploded schematic diagram of the inner tank structure of the electric water faucet provided by a specific embodiment of the utility model;

[0028] Figure 3 This is a cross-sectional view of the inner tank structure of the electric water faucet provided by a specific embodiment of the present utility model;

[0029] Figure 4 This is a cross-sectional view of the inner container body provided by a specific embodiment of the present utility model;

[0030] Figure 5 It is a structural schematic diagram of the inner liner body provided by a specific embodiment of the present utility model.

[0031] Description of labels:

[0032] 1. Inner tank assembly; 11. Inner tank body; 111. First connecting hole; 112. Second connecting hole; 113. Third connecting hole; 114. Main water inlet; 115. Heating chamber; 1151. Water outlet chamber; 116. Electrical installation chamber; 12. Inner tank connector; 121. External water inlet; 122. External water outlet; 13. Top cover; 131. Main water outlet;

[0033] 2. Heating element;

[0034] 3. Flow guide; 31. Flow guide channel; 32. Water outlet;

[0035] 4. Seals. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] In the description of this application, it should be understood that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0039] In the description of this application, it should be noted that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] like Figure 1-Figure 4 As shown, this embodiment provides an inner tank structure of an electric water faucet, and the inner tank structure is used to heat the cold water entering it to heat the cold water to the temperature required by the user. The inner tank structure includes an inner tank assembly 1 and a heating element 2. A main water inlet 114 is provided at one end of the inner tank assembly 1, and a main water outlet 131 is provided at the other end; the inner tank assembly 1 includes an inner tank body 11, and a heating chamber 115 is provided in the inner tank body 11. The main water inlet 114 and the main water outlet 131 are both connected to the heating chamber 115. Specifically, a switch valve is also provided in the inner tank body 11, and the main water inlet 114 is connected to the heating chamber 115 through the switch valve. The heating element 2 is provided in the heating chamber 115, and cold water enters the inner tank assembly 1 from the main water inlet 114, enters the heating chamber 115 through the switch valve, and is heated to hot water of the temperature required by the user by the heating element 2 in the heating chamber 115.

[0041] Specifically, the inner tank body 11 is also provided with an electrical installation cavity 116, in which a start switch is installed. The start switch and the heating element 2 are electrically connected via wires. The sidewalls of the inner tank body 11 are provided with a first connecting hole 111, a second connecting hole 112, and a third connecting hole 113. The on-off valve is a three-way on-off valve that controls the communication between the first connecting hole 111, the second connecting hole 112, and the third connecting hole 113. The first connecting hole 111 is connected to the main water inlet 114, the second connecting hole 112 is connected to the heating chamber 115, and the third connecting hole 113 is connected to the start-up channel of the electrical installation cavity 116. When the on-off valve is closed, the first connecting hole 111 is disconnected from the second connecting hole 112 and the third connecting hole 113, preventing cold water from entering the heating chamber 115. When the cold water mode is on, the three-way switch valve controls the connection between the first connecting hole 111 and the second connecting hole 112. Cold water flows from the main water inlet 114 through the first connecting hole 111 and the second connecting hole 112 into the heating chamber 115, and then flows out from the main water outlet 131, providing cold water to the user. When the hot water mode is on, the three-way switch valve controls the connection between the first connecting hole 111 and the second connecting hole 112 and the third connecting hole 113. Most of the cold water entering the first connecting hole 111 from the main water inlet 114 flows into the heating chamber 115 through the second connecting hole 112, while a small amount of cold water flows into the electrical installation chamber 116 through the start channel through the third connecting hole 113, triggering the start switch. The start switch controls the heating element 2 to start heating, so that the cold water entering the heating chamber 115 is heated by the heating element 2 and then flows out from the main water outlet 131, providing hot water of the required temperature to the user.

[0042] The specific structure and control principle of the switch valve and the start switch are not the improvements of this embodiment. They can be designed with reference to the existing technology and will not be described in detail here.

[0043] The heating element 2 is usually a heating tube, which is made of stainless steel or copper. There is still residual heat in the heating tube after the heating stops, and the volume of the heating chamber 115 of the electric water faucet is small. The residual heat of the heating tube will quickly heat the water in the heating chamber 115 to a higher temperature. If it is used again in a short time, this part of the higher temperature water will be discharged first. This phenomenon is called water stop temperature rise. When the normal water temperature is about 40°C, the high-temperature hot water temperature generated by the water stop temperature rise will reach 50°C~60°C, which poses a risk of scalding.

[0044] To address the aforementioned technical issues, the inner tank structure of the electric faucet provided in this embodiment further includes a flow guide 3 disposed within the heating chamber 115. Within the heating chamber 115, a water outlet chamber 1151 is formed between the end of the heating element 2 near the main water outlet 131 and the main water outlet 131. One end of the flow guide 3 is connected to the main water inlet 114 via a switch valve, while the other end extends to the water outlet chamber 1151 and defines a water outlet hole 32. The water outlet hole 32 is spaced apart from the main water outlet 131. Specifically, when cold water enters the heating chamber 115, it is directed by the flow guide 3 into the water outlet chamber 1151, which is located near the main water outlet 131. When the heating element 2 stops heating, the residual heat of the heating element 2 generates high-temperature hot water. When the faucet is restarted, cold water enters the flow guide 3 from the main water inlet 114 through the switch valve and is then guided by the flow guide 3 into the water outlet chamber 1151. Since the heating element 2 is initially activated, its heating power is unstable and the heating speed is slow, the water outlet 32 is spaced apart from the main water outlet 131. At this time, the cold water flowing from the guide member 3 into the water outlet chamber 1151 can disperse the high-temperature hot water in the water outlet chamber 1151, quickly cooling the high-temperature hot water to lower the temperature of the hot water in the water outlet chamber 1151. This allows the cooled hot water to be discharged from the main water outlet 131 first, thereby reducing the risk of scalding. It is understandable that due to the small size of the heating chamber 115, once the heating element 2 is stably heated, the cold water entering the water outlet chamber 1151 through the guide member 3 can also be quickly heated without affecting the normal outlet water temperature.

[0045] The guide member 3 can be set as a guide tube structure or a guide groove structure, as long as it can guide the cold water entering the heating chamber 115 to the water outlet chamber 1151 first, thereby cooling the residual high-temperature hot water.

[0046] In one embodiment, if Figure 3 As shown, a radial gap is left between the water outlet hole 32 and the main water outlet 131. By providing this radial gap, cold water can enter the water outlet cavity 1151 through the flow guide 3 and fully mix with the high-temperature hot water remaining in the water outlet cavity 1151 before flowing out of the main water outlet 131, thereby preventing the end of the flow guide 3 that communicates with the water outlet cavity 1151 from being directly opposite the main water outlet 131, causing cold water to flow out directly through the main water outlet 131.

[0047] Furthermore, if the radial spacing is H, then 1 / 6D<H≤1 / 4D, where D is the inner diameter of the inner tank body 11. The radial spacing is specifically designed according to the inner diameter of the inner tank body 11. The radial spacing should not be too large. When the radial spacing is too large, the cold water entering the water outlet chamber 1151 through the guide member 3 has not yet had time to mix with the residual high-temperature hot water near the main water outlet 131, and the residual high-temperature hot water will flow out from the main water outlet 131, which is still likely to cause scalding to the user. The radial spacing should not be too small either. When the radial spacing is too small, after the heating power of the heating element 2 is stabilized, the cold water entering the water outlet chamber 1151 through the guide member 3 is too close to the main water outlet 131, and it will flow out from the main water outlet 131 before it has time to be heated by the heating element 2, affecting the outlet water temperature. It should be noted that the range of this radial spacing is set when the inner diameter of the inner tank body 11 is small, and is intended to solve the problem of temperature rise when water is cut off when the volume of the heating chamber 115 is small.

[0048] In one embodiment, an axial spacing is left between the water outlet 32 and the main water outlet 131 .

[0049] Similarly, in the water outlet chamber 1151, the axial spacing between the end of the guide member 3 close to the water outlet chamber 1151 and the main water outlet 131 should not be too large or too small. When the axial spacing is too large, residual high-temperature hot water will not be able to fully mix with the cold water, causing the risk of scalding the user; when the axial spacing is too small, it will also affect the water outlet temperature.

[0050] Specifically, if the axial spacing is h, then 10 mm ≤ h ≤ 20 mm. The axial spacing between the guide member 3 and the main water outlet 131 is less than or equal to the axial spacing between the heating member 2 and the main water outlet 131. This ensures that cold water entering the heating chamber 115 first enters the water outlet chamber 1151 and mixes with the remaining high-temperature hot water near the main water outlet 131, thereby lowering the temperature of the remaining high-temperature hot water near the main water outlet 131 and reducing the risk of scalding.

[0051] Since the volume of the heating chamber 115 is relatively small, only one flow guide 3 is provided, which can solve the problem of scalding caused by the temperature rise when the water supply is stopped. Of course, for a heating chamber 115 with a larger volume, multiple flow guides 3 can also be provided at intervals along the circumference of the heating chamber 115 to achieve the ability to quickly cool down the high-temperature hot water remaining in the water outlet chamber 1151. Exemplarily, two flow guides 3 are provided, and the interval between the two flow guides 3 is 180°; or four flow guides 3 are provided, and the adjacent flow guides 3 among the four flow guides 3 are spaced 90° apart. When multiple flow guides 3 are provided, a connecting cavity is provided at one end of the multiple flow guides 3 away from the main water outlet 131, and the connecting cavity is used to connect the main water inlet 114 and the multiple flow guides 3.

[0052] In one embodiment, if Figure 4 and Figure 5As shown, the flow guide 3 is disposed on the inner wall of the inner container body 11. Providing the flow guide 3 on the inner wall of the inner container body 11 facilitates securing the flow guide 3 within the heating chamber 115, and the flow guide 3 can be secured to the inner wall of the inner container body 11 along its entire length. The flow guide 3 can be fixed to the inner wall of the inner container body 11 at intervals along its length using a fixing structure, or it can be welded to the inner wall of the inner container body 11.

[0053] The main water outlet 131 is arranged on the axis of the heating chamber 115, so as to facilitate the water outlet from the center of the electric water faucet. When the volume of the heating chamber 115 is small, the guide member 3 is arranged on the inner wall of the inner tank body 11 to meet the radial spacing.

[0054] In one embodiment, the flow guide 3 is integrally formed with the inner wall of the liner body 11. This arrangement does not require assembly, simplifies the assembly steps, and does not require a sealing structure, thus reducing costs.

[0055] For example, an enclosure plate is provided on the inner wall of the liner body 11, and the enclosure plate and the inner wall of the liner body 11 enclose a diversion channel 31; the enclosure plate is manufactured by a mold to form an integral structure with the liner body 11. Alternatively, a diversion groove can be directly provided on the inner wall of the liner body 11, and the cold water is guided to the water outlet chamber 1151 through the diversion groove.

[0056] In one embodiment, the inner tank assembly 1 further includes a top cover 13 and an inner tank connector 12. Both ends of the inner tank body 11 are set to be open. The end near the electrical installation cavity 116 is connected to the inner tank connector 12. One end of the inner tank connector 12 is provided with an external water inlet 121, which is connected to the purified water pipeline or the tap water pipeline. The other end of the inner tank connector 12 is provided with an external water outlet 122, which is connected to the main water inlet 114. The top cover 13 is provided at one end of the inner tank body 11 near the heating cavity 115, and the main water outlet 131 is provided on the top cover 13. The provision of the top cover 13 facilitates the installation of the heating element 2. At the same time, the main water outlet 131 is provided on the axis of the heating cavity 115 to ensure smooth water discharge.

[0057] In one embodiment, a sealing member 4 is provided between the top cover 13 and the inner wall of the inner container body 11. The sealing member 4 ensures the sealing of the heating chamber 115 and can prevent water leakage of the inner container structure.

[0058] Specifically, the seal 4 is arranged in a "U" shape, and an avoidance hole is provided at the bottom of the "U"-shaped seal 4 corresponding to the main water outlet 131. The outer diameter of one end of the top cover 13 close to the heating cavity 115 is smaller than the outer diameter of the end far from the heating cavity 115. The end of the top cover 13 far from the heating cavity 115 is fitted with the inner wall of the inner tank body 11 and fixed by fastening screws. The circumference of the "U"-shaped seal 4 is arranged in a sealing groove formed between one end of the top cover 13 close to the heating cavity 115 and the inner wall of the inner tank body 11, and the circumference of the "U"-shaped seal 4 is in interference fit with the sealing groove to ensure the sealing performance of the heating cavity 115.

[0059] This embodiment also provides an electric water faucet, including the inner tank structure of the above-mentioned electric water faucet. By applying the inner tank structure of the above-mentioned electric water faucet, the high-temperature hot water remaining in the heating cavity 115 last time can be quickly cooled down, the scalding risk caused by the stop water temperature rise can be reduced, and the water use safety of the electric water faucet is ensured.

[0060] In the specific content of the above specific implementation manner, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not conflict, they should be considered as the scope described in this specification.

[0061] The specific content of the above specific implementation manner only expresses several implementation manners of the present invention, and its description is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. The inner tank structure of the electric water faucet is characterized by: The liner structure comprises: An inner liner assembly (1), wherein one end of the inner liner assembly (1) is provided with a main water inlet (114), and the other end is provided with a main water outlet (131); the inner liner assembly (1) comprises an inner liner body (11), a heating chamber (115) is provided in the inner liner body (11), and the main water inlet (114) and the main water outlet (131) are both in communication with the heating chamber (115); A heating element (2) is disposed in the heating chamber (115), and a water outlet chamber (1151) is formed between an end of the heating element (2) close to the main water outlet (131) and the main water outlet (131); A flow guide (3) is provided in the heating chamber (115), one end of the flow guide (3) is communicated with the main water inlet (114), and the other end extends to the water outlet chamber (1151) and is provided with a water outlet hole (32); the water outlet hole (32) is spaced apart from the main water outlet (131).

2. The inner tank structure of the electric water faucet according to claim 1, characterized in that: A radial interval is left between the water outlet hole (32) and the main water outlet (131).

3. The inner tank structure of the electric water faucet according to claim 2, characterized in that: The radial spacing is H, then 1 / 6D<H≤1 / 4D, wherein D is the inner diameter of the liner body (11).

4. The inner tank structure of the electric water faucet according to claim 1, characterized in that: An axial spacing is left between the water outlet hole (32) and the main water outlet (131).

5. The inner tank structure of the electric water faucet according to claim 4, characterized in that: The axial spacing is h, then 10mm≤h≤20mm.

6. The inner tank structure of the electric water faucet according to any one of claims 1 to 5, characterized in that: The flow guide (3) is arranged on the inner wall of the inner container body (11).

7. The inner tank structure of the electric water faucet according to claim 6, characterized in that: The flow guide (3) is integrally formed with the inner wall of the liner body (11).

8. The inner tank structure of the electric water faucet according to any one of claims 1 to 5, characterized in that: The inner tank assembly (1) further comprises a top cover (13), wherein the top cover (13) is arranged at one end of the inner tank body (11) close to the heating chamber (115), and the main water outlet (131) is arranged on the top cover (13).

9. The inner tank structure of the electric water faucet according to claim 8, characterized in that: A sealing member (4) is provided between the top cover (13) and the inner wall of the liner body (11).

10. Electric water tap, characterized in that, The invention comprises an inner tank structure of an electric water faucet according to any one of claims 1 to 9.

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